Classify the following as monomials, binomials and trinomials.

$15abc$

State whether the given pairs are like/unlike. Give reasons for your answer.

$-15x, 0.15x$

State whether the given pairs are like/unlike. Give reasons for your answer.

$3x, \frac{1}{3y}$

State whether the given pairs are like/unlike. Give reasons for your answer.

$5x, 5y$

State whether the given pairs are like/unlike. Give reasons for your answer.

State whether the given pairs are like/unlike. Give reasons for your answer.

$3x^2, 3x$

State whether the given pairs are like/unlike. Give reasons for your answer.

$24xy, 24yz$

Identify the like terms in the following expressions.

$\frac{a}{3}, 2ab, 10x^{3}y, -x^2{y}^2, -15z^2, -7ba, 7a, 13x^2{y}^2, z^2, 20yz, \frac{1}{3}y{x}^3, -20yz$

Identify the like and unlike terms.

$3x, -7x, 10x$